Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (80) Fluid (11) (-) Meconium (1) Serum or Plasma (92) Tissue (10) Urine (41) Test Area (-) Newborn Tox (1) Test Category Analgesics (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 4127ME Buprenorphine and Metabolite - Total (Qualitative), Meconium